1. Plural of endorsor; people who give their approval, support, or signature to something, especially a document, product, or candidate.
Usage: Common in legal and commercial contexts; Also spelled 'endorsers' (more common in modern usage)
2. In finance and banking, people who sign the back of a check or promissory note to transfer it to another party.
Usage: Legal/financial term

Examples

• The celebrity endorsors of the campaign helped increase its visibility.
• Multiple endorsors signed the petition to support the new policy.
• The check required endorsors to sign before it could be deposited.
• Political endorsors from both parties backed the reform initiative.
• The product's endorsors claimed it improved their daily lives.
• Bank endorsors must verify their signatures on the promissory note.